Gamma Analysis

Gamma Analysis
Although the use of the two factors provides the
independent evaluation of a dose difference and misalignment,
the gamma offers a composite analysis
with the two variables collapsed into one parameter
(Harms et al. 1998; Low et al. 1998c; Dupuydt,Van
Esch, and Huyskens 2002). The gamma is defined as
the square root of a linear quadratic addition of the
two factors, while they are provided in relative magnitude
to their acceptance criteria (CDTA and CDD), as
shown in equation (4.1).